Just as an FYI: we have removed the Java bindings from the 1.7.0 release due to all the reported errors - looks like that code just isn't ready yet for release. It remains available on the nightly snapshots of the developer's trunk while we continue to debug it.

With that said, I tried your example using the current developer's trunk - and it worked just fine.

I ran it on a single node, however. Were you running this across multiple nodes? Is it possible that the "classes" directory wasn't available on the remote node?

I am still struggling with the installation problems! I get very strange errors. everything is fine when I run OpenMPI for C codes, but when I try to run a simple java code I get very strange error. The code is as simple as the following and I can not get it running: